8, 240, 380, 400, 420, 440, 480 Input Regulation (±1% output) +10% / -20% Input Regulation (+1% -5% output) +10%1-25% Response Time < 2 cycles Correction Time 29 V/sec. at 480 Vac 3 phase, 48 V/sec. 240 Vac single phase. Contact factory for other times. Efficiency Typical 97% for PLC units and 99% for AVR